PLANT BACTERI*, 



PLATE 17 



BLACK ROT OF CABBAGE, ETC. 



(I) Cross-section of bundle in a cabbage leaf, near a group of water-potes, through which' Hart, i-am/ir.ilre entered the 

 vascular system. Stained with carbol fuchsin. The characteristic brown stain here lies between the vessels, but often even in the 

 same sections it is located in the vessel-wall, and not infrequently in the walls of some vessels to the exclusion of others which are 

 contiguous. Slide 216 C (12), upper row. (2) Potato culture of />' I I days. (3) Potato culture of Baft . 



10 days. This would answer also fdr Kact. ci//r 51 



